Some groups work together for years, honing and refining their sound until they develop a formula that yields a hit record. Then there are the Traveling Wilburys, a happy accident that brought together five superstars in April 1988: George Harrison, Bob Dylan, Jeff Lynne, Tom Petty, and Roy Orbison. The Wilburys produced two albums; the first, Traveling Wilburys Vol. 1, led off with their biggest hit, “Handle with Care.”